/*
 * Copyright (c) 2002-2009 Moxie Marlinspike
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */


#include <stdlib.h>
#include <string.h>

#include "OCSPDenier.hpp"
#include "../Logger.hpp"

using namespace boost::asio;

OCSPDenier* OCSPDenier::ocspDenier    = new OCSPDenier();
const char* OCSPDenier::ocspResponse  = "HTTP/1.0 200 Ok\r\ncontent-type: application/ocsp-response\r\ncontent-transfer-encoding: binary\r\ncontent-length: 1\r\nconnection: close\r\n\r\n3";

OCSPDenier* OCSPDenier::getInstance()
{
	return ocspDenier;
}

void OCSPDenier::denyOCSPRequest(boost::shared_ptr<ip::tcp::socket> socket)
{
	boost::shared_ptr<unsigned char> buffer((unsigned char*)malloc(1024), free);
	boost::shared_ptr<HttpHeaders> headers(new HttpHeaders());

	socket->async_read_some(boost::asio::buffer(buffer.get(), 1024),
	                        boost::bind(&OCSPDenier::readComplete, this,
	                                    socket, buffer, headers,
	                                    placeholders::error,
	                                    placeholders::bytes_transferred));
}

void OCSPDenier::readComplete(boost::shared_ptr<ip::tcp::socket> socket,
                              boost::shared_ptr<unsigned char> buffer,
                              boost::shared_ptr<HttpHeaders> headers,
                              const boost::system::error_code &error,
                              size_t bytesRead)
{
	if (error)
	{
		Logger::logError("Error reading OCSP request.");
		return;
	}

	if (headers->process((char*)buffer.get(), bytesRead))
	{
		async_write(*socket, boost::asio::buffer(ocspResponse, strlen(ocspResponse)),
		            boost::bind(&OCSPDenier::writeComplete, this, socket, placeholders::error));
	}
}

void OCSPDenier::writeComplete(boost::shared_ptr<ip::tcp::socket> socket,
                               const boost::system::error_code &error)
{
	Logger::logError("OCSP Denial Sent.");
}
